The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 2013
Filed:
Jan. 30, 2009
Takayuki Demura, Mishima, JP;
Takayuki Demura, Mishima, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An air-fuel ratio control apparatus includes a catalytic converter disposed at a position downstream of an exhaust gas aggregated portion; a downstream air-fuel ratio sensor disposed in an exhaust passage at a position downstream of the catalytic converter; first feedback amount updating means for updating a first feedback amount to have an output value of the downstream air-fuel ratio sensor coincide with a target downstream-side air-fuel ratio based on the output value of the downstream air-fuel ratio sensor; and a learning means for updating a leaning value of the first feedback amount in such a manner that the leaning value brings in a steady-state component of the first feedback amount based on the first feedback amount.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile